Security Advisory

CVE-2026-47265

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-02 18:32:50

Last updated 2026-06-03 12:48:54

Assigner GitHub_M

CVSS score not scored

State PUBLISHED

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, cookies set with the `cookies` parameter on requests are sent after following a cross-origin redirect. If a developer uses the `cookies` parameter on a per-request basis then sensitive data might be leaked to an attacker if they manage to control a redirect. Version 3.14.0 patches the issue. If unable to upgrade, using a `Cookie` header in the `headers` parameter is not vulnerable.

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